Process of coating one metal with another metal.



UNITED STATES PATENT OFFICE.

SAMUEL HEMAN THURSTON, OF LONGBRANCH, NEW JERSEY.

PROCESS OF COATING ONE METALWITH ANOTHER METAL.

SPECIFICATION forming part of Letters Patent No. 706,702, dated August12, 1902. Application filed December 24, 1901. Serial No. 87,079- (Nospecimens.)

To all whom, it may concern.-

Be it known that I, SAMUEL HEMAN THURS- TON, a citizen of the UnitedStates, and a resident of Longbranch, in the county of Monmouth andState of New Jersey, have invented certain new and useful Improvementsin Processes of Coating One Metal with Another Metal, of which thefollowing is a specification.

My invention relates to processes of coating one metal with anothermetal by impacting one against the other, thereby producing anamorphous,adherent, inherent, coherent, and permanent film or particleof one metal upon another metal, the particles of the coating metalbeing driven into and incorporated with the metal being coated bybeating or impacting them into the interstices or pores at and beneaththe surface thereof, as hereinafter specified; and it consists incertain methods of procedure fully specified and claimed herein.

In previous applications to which this one is closely related and uponwhich this is an improvement I have described and claimed the coating ofone metal with another by impact, producing an amorphous, permanent,inherent, and coherent metallic coating, and also a coating of the oxidof the said metal upon the metal being coated which differs in someessential points from my present invention.

In order that persons skilled in the art to which my inventionappertains may understand and practice my invention, I will proceed todescribe it. v

The first step in my process consists in heating the metal to be coatedsufliciently to open up the pores and loosen any scale or oxidationwhich may cling to the metal to be coated and also to prepare thesurface for the next step, which consists in beating upon the metalbeing coated rapidly with boaters composed of the coating metal, (inamanner similar to that described in my United States Patent No. 661,650,issued November 13, 1900,) the first effect of which is to boat off anyscale which adheres and to clean the surface of the metal being coated,and then the coating metal from the beaters is beaten onto the surfaceinto the opened pores and beneath the surface thereof more deeply,quicker, and with less disturbance of the cleaned metal. This operationforms a more compact and smooth coating than by my former process,herein referred to. By heating the metal to be coated previous toheating it the use of acids and alkalies to clean the metal is avoided,and a better product is the result. It is also cheaper.

In the case of coppering iron and steel the heating of the metal to becoated causes a heat in the copper coating, and an oxidation occurswhich is strongly adherent and permanent, practically unaffected byacids and alkalies, and a valuable product results.

Having now fully described my invention and the manner in which I havedisclosed it, What I claim as new and as my invention, and desire tosecure by Letters Patent, is

The within-described process of coating one metal upon another with anamphorous inherent, adherent, coherent, permanent film or particle ofthe coating metal, which con sists in artificially heating the metal tobe coated and then impacting the particles of the coating metal into thepores of the metal being coated, by beating them, substantially and forthe purposes hereinbefore specified.

Signed at Newark, in the county of Essex and State of New Jersey, this23d day of November, A. D. 1901.

SAMUEL IIEMAN THURSTON. Witnesses:

Gno. O. TOTTEN, HARRY TEMPLETON.

